Comments:
Lange Datograph Perpetual movement after spa
Sharing some caseback shots of my Dato perpetual after servicing.
Looks crisp all over again! However, it also looks like the patina has been “cleaned away”? Still nice to me so I’m ok with it.
Enjoy the pics !
Cheers
Robin
Looks fantastic!
Yes,Lange cleans the movement patina away as I also saw after the service of my Datograph.
Epic! A movement as beautiful as that should shown to the world, for artistic purposes, of course. :)
Still the best looking movement after all these years!
To me, this is what makes Lange, Lange.
I wounder is there is some way to prevent the patina in the first place, maybe plating it in some sort of noble metal or something... 🤔
Glad you got it back, Robin!
Sadly, the patina always disappears when Lange cleans and services the movement. No way to keep it.
I hope you have it for a long time before it needs servicing again!
May I ask, was there a problem that led you to send it in? Or was this (hopefully) preventative maintenance?
Robin, what a stunningly gorgeous movement!
Yes, patina on the German Silver movement is usually a casualty of Lange's cleaning process of the disassembled movement plates. Lange will, however, keep your watch case as-is by default - I have seen some early YG lances where the patina on the case is absolutely stunning and you wouldn't want to lose that.
Again: thrilled for you that you have your Datograph Perpetual back - and good as new.
Thanks for sharing on the case patina :)
So far I haven’t seen any on my white gold case on the Dato perpetual .
My rose gold Lange 1 has some patina and yes it remains on the case 
